Block Constrained Trellis Coded Vector Quantization of LSF Parameters for Wideband Speech Codecs

  • Park, Jung-Eun (School of Electrical Engineering and Computer Science, Hanyang University) ;
  • Kang, Sang-Won (School of Electrical Engineering and Computer Science, Hanyang University)
  • Received : 2008.05.01
  • Accepted : 2008.08.20
  • Published : 2008.10.31

Abstract

In this paper, block constrained trellis coded vector quantization (BC-TCVQ) is presented for quantizing the line spectrum frequency parameters of the wideband speech codec. Both a predictive structure and a safety-net concept are combined into BC-TCVQ to develop the predictive BC-TCVQ. The performance of this quantization is compared with that of the linear predictive coding vector quantizer used in the AMRWB codec, demonstrating reductions in spectral distortion.

Acknowledgement

Supported by : Korea Science & Engineering Foundation